103 static int hsi2c_wait_for_trx(struct exynos5_hsi2c *i2c)  in hsi2c_wait_for_trx()  argument
108 		u32 int_status = readl(&i2c->usi_int_stat);  in hsi2c_wait_for_trx()
111 			u32 trans_status = readl(&i2c->usi_trans_status);  in hsi2c_wait_for_trx()
114 			writel(int_status, &i2c->usi_int_stat);  in hsi2c_wait_for_trx()
227 	struct exynos5_hsi2c *i2c = i2c_bus->hsregs;  in exynos5_i2c_reset()  local
231 	i2c_ctl = readl(&i2c->usi_ctl);  in exynos5_i2c_reset()
233 	writel(i2c_ctl, &i2c->usi_ctl);  in exynos5_i2c_reset()
235 	i2c_ctl = readl(&i2c->usi_ctl);  in exynos5_i2c_reset()
237 	writel(i2c_ctl, &i2c->usi_ctl);  in exynos5_i2c_reset()
260 static unsigned hsi2c_poll_fifo(struct exynos5_hsi2c *i2c, bool rx_transfer)  in hsi2c_poll_fifo()  argument
265 	while (readl(&i2c->usi_fifo_stat) & fifo_bit) {  in hsi2c_poll_fifo()
266 		if (readl(&i2c->usi_int_stat) & HSI2C_INT_I2C_EN) {  in hsi2c_poll_fifo()
276 			    !(readl(&i2c->usi_fifo_stat) & fifo_bit))  in hsi2c_poll_fifo()
304 static int hsi2c_prepare_transaction(struct exynos5_hsi2c *i2c,  in hsi2c_prepare_transaction()  argument
318 	writel(readl(&i2c->usi_timeout) & ~HSI2C_TIMEOUT_EN, &i2c->usi_timeout);  in hsi2c_prepare_transaction()
321 	writel(HSI2C_SLV_ADDR_MAS(chip), &i2c->i2c_addr);  in hsi2c_prepare_transaction()
326 		       &i2c->usi_ctl);  in hsi2c_prepare_transaction()
329 		writel(conf | HSI2C_READ_WRITE, &i2c->usi_auto_conf);  in hsi2c_prepare_transaction()
333 		       &i2c->usi_ctl);  in hsi2c_prepare_transaction()
336 		writel(conf, &i2c->usi_auto_conf);  in hsi2c_prepare_transaction()
340 	writel(HSI2C_INT_I2C_EN, &i2c->usi_int_stat);  in hsi2c_prepare_transaction()
348 static int hsi2c_wait_while_busy(struct exynos5_hsi2c *i2c)  in hsi2c_wait_while_busy()  argument
352 	while (readl(&i2c->usi_trans_status) & HSI2C_MASTER_BUSY) {  in hsi2c_wait_while_busy()
362 static int hsi2c_write(struct exynos5_hsi2c *i2c,  in hsi2c_write()  argument
379 		(i2c, chip, len + alen, false, issue_stop);  in hsi2c_write()
385 		rv = hsi2c_poll_fifo(i2c, false);  in hsi2c_write()
390 		writel(addr[i], &i2c->usi_txdata);  in hsi2c_write()
394 		rv = hsi2c_poll_fifo(i2c, false);  in hsi2c_write()
399 		writel(data[i], &i2c->usi_txdata);  in hsi2c_write()
402 	rv = hsi2c_wait_for_trx(i2c);  in hsi2c_write()
406 		int tmp_ret = hsi2c_wait_while_busy(i2c);  in hsi2c_write()
411 	writel(HSI2C_FUNC_MODE_I2C, &i2c->usi_ctl); /* done */  in hsi2c_write()
415 static int hsi2c_read(struct exynos5_hsi2c *i2c,  in hsi2c_read()  argument
434 		rv = hsi2c_write(i2c, chip, addr, alen, NULL, 0, false);  in hsi2c_read()
439 	rv = hsi2c_prepare_transaction(i2c, chip, len, true, true);  in hsi2c_read()
445 		rv = hsi2c_poll_fifo(i2c, true);  in hsi2c_read()
450 		data[i] = readl(&i2c->usi_rxdata);  in hsi2c_read()
453 	rv = hsi2c_wait_for_trx(i2c);  in hsi2c_read()
456 	tmp_ret = hsi2c_wait_while_busy(i2c);  in hsi2c_read()
460 	writel(HSI2C_FUNC_MODE_I2C, &i2c->usi_ctl); /* done */  in hsi2c_read()